Differences
This shows you the differences between two versions of the page.
Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
en:docs:fapi:kbdgetstatus [2021/08/20 07:59] – prokushev | en:docs:fapi:kbdgetstatus [2021/09/18 15:30] (current) – prokushev | ||
---|---|---|---|
Line 5: | Line 5: | ||
This call gets the current state of the keyboard. | This call gets the current state of the keyboard. | ||
- | ==Syntax== | + | ===== Syntax |
- | | + | <code c> |
+ | KbdGetStatus (StatData, KbdHandle) | ||
+ | </ | ||
- | ===Parameters=== | + | ===== Parameters ===== |
- | ;StatData (PKBDINFO) - output : Address of the keyboard status structure: | + | |
- | :length (USHORT) : Length, in bytes, of this data structure, including length. | + | |
- | | + | |
- | :sysstate (USHORT) : State as follows: | + | |
- | ''' | + | |
- | | + | |
- | | + | ^ Bit ^ Description |
- | | + | | 15-9 | Reserved, set to zero. | |
- | | + | | 8 | Shift return is on. | |
- | | + | | 7 | Length of the turn-around character (meaningful only if bit 6 is on). | |
- | | + | | 6 | Turn-around character is modified. |
- | | + | | 5 | Interim character flags are modified. |
- | | + | | 4 | Shift state is modified. |
- | | + | | 3 | ASCII mode is on. | |
- | | + | | 2 | Binary mode is on. | |
- | :turnchardef (USHORT) : Definition of the turn-around character. In ASCII and extended-ASCII format, the turn-around character is defined as the carriage return. In ASCII format only, the turn-around character is defined in the low-order byte. | + | | 1 | Echo off. | |
- | :intcharflag (USHORT) : Interim character flags: | + | | 0 | Echo on. | |
- | | + | |
- | | + | * turnchardef (USHORT) : Definition of the turn-around character. In ASCII and extended-ASCII format, the turn-around character is defined as the carriage return. In ASCII format only, the turn-around character is defined in the low-order byte. |
- | | + | |
- | | + | |
- | | + | ^ Bit ^ Description |
- | | + | | 15-8 | NLS shift state. |
- | :shiftstate (USHORT) : Shift state as follows: | + | | 7 | Interim character flag is on. | |
- | ''' | + | | 6 | Reserved, set to zero. | |
- | | + | | 5 | Application requested immediate conversion. |
- | | + | | 4-0 | Reserved, set to zero. | |
- | | + | |
- | | + | * shiftstate (USHORT) : Shift state as follows: |
- | | + | |
- | | + | ^ Bit ^ Description |
- | | + | | 15 | SysReq key down | |
- | | + | | 14 | CapsLock key down | |
- | | + | | 13 | NumLock key down | |
- | | + | | 12 | ScrollLock key down | |
- | | + | | 11 | Right Alt key down | |
- | | + | | 10 | Right Ctrl key down | |
- | | + | | 9 | Left Alt key down | |
- | | + | | 8 | Left Ctrl key down | |
- | | + | | 7 | Insert on | |
- | | + | | 6 | CapsLock on | |
- | ; KbdHandle (HKBD) - input : Default keyboard or the logical keyboard. | + | | 5 | NumLock on | |
+ | | 4 | ScrollLock on | | ||
+ | | 3 | Either Alt key down | | ||
+ | | 2 | Either Ctrl key down | | ||
+ | | 1 | Left Shift key down | | ||
+ | | 0 | Right Shift key down | | ||
+ | |||
+ | * KbdHandle (HKBD) - input : Default keyboard or the logical keyboard. | ||
+ | |||
+ | ===== Return Code ===== | ||
+ | |||
+ | rc ([[USHORT]]) - return | ||
- | ===Return Code=== | ||
- | rc (USHORT) - return | ||
Return code descriptions are: | Return code descriptions are: | ||
- | * 0 NO_ERROR | ||
- | * 376 ERROR_KBD_INVALID_LENGTH | ||
- | * 439 ERROR_KBD_INVALID_HANDLE | ||
- | * 445 ERROR_KBD_FOCUS_REQUIRED | ||
- | * 447 ERROR_KBD_KEYBOARD_BUSY | ||
- | * 464 ERROR_KBD_DETACHED | ||
- | * 504 ERROR_KBD_EXTENDED_SG | ||
- | ==Remarks== | + | * 0 NO_ERROR |
+ | * 376 ERROR_KBD_INVALID_LENGTH | ||
+ | * 439 ERROR_KBD_INVALID_HANDLE | ||
+ | * 445 ERROR_KBD_FOCUS_REQUIRED | ||
+ | * 447 ERROR_KBD_KEYBOARD_BUSY | ||
+ | * 464 ERROR_KBD_DETACHED | ||
+ | * 504 ERROR_KBD_EXTENDED_SG | ||
+ | |||
+ | ===== Remarks ===== | ||
The initial state of the keyboard is established by the system at application load time. Some default states may be modified by the application through KbdSetStatus. KbdGetStatus returns only those keyboard parameters initially set by KbdSetStatus. The returned parameters are: | The initial state of the keyboard is established by the system at application load time. Some default states may be modified by the application through KbdSetStatus. KbdGetStatus returns only those keyboard parameters initially set by KbdSetStatus. The returned parameters are: | ||
- | * Input Mode | + | |
- | * Interim Character Flags | + | |
- | * Shift State | + | * Interim Character Flags |
- | * Echo State | + | * Shift State |
- | * Turnaround Character | + | * Echo State |
+ | * Turnaround Character | ||
KbdGetStatus completes only when the handle has access to the physical keyboard (focus) or the handle is 0 and no other handle has the focus. | KbdGetStatus completes only when the handle has access to the physical keyboard (focus) or the handle is 0 and no other handle has the focus. | ||
- | ===Family API Considerations=== | + | ==== Family API Considerations ==== |
Some options operate differently in the DOS mode than in the OS/2 mode. Therefore, the following restrictions apply to KbdGetStatus when coding in the DOS mode: | Some options operate differently in the DOS mode than in the OS/2 mode. Therefore, the following restrictions apply to KbdGetStatus when coding in the DOS mode: | ||
- | * Interim character is not supported | + | |
- | * TurnAround character is not supported | + | * TurnAround character is not supported |
- | * NLS_SHIFT_STATE is always NULL. | + | * NLS_SHIFT_STATE is always NULL. |
- | * KbdHandle is ignored. | + | * KbdHandle is ignored. |
- | ==Example Code== | + | ===== Bindings ===== |
- | ===C Binding=== | + | |
- | <PRE> | + | ==== C Binding ==== |
+ | |||
+ | <code c> | ||
typedef struct _KBDINFO { /* kbst */ | typedef struct _KBDINFO { /* kbst */ | ||
USHORT cb; /* length in bytes of this structure */ | USHORT cb; /* length in bytes of this structure */ | ||
Line 98: | Line 116: | ||
USHORT | USHORT | ||
- | </PRE> | + | </code> |
- | ===MASM Binding=== | + | ==== MASM Binding ==== |
- | <PRE> | + | |
+ | <code c> | ||
KBDINFO struc | KBDINFO struc | ||
kbst_cb | kbst_cb | ||
Line 118: | Line 137: | ||
Returns WORD | Returns WORD | ||
- | </PRE> | + | </code> |
- | + | ||
- | + | ||
- | ====== Note ====== | + | ===== Note ===== |
This text based on [[http:// | This text based on [[http:// |